OAKLAND, CA — Al Davis was a rebel with a cause — “Just win, baby” he exhorted his beloved Oakland Raiders. And as the NFL well knows, he was also a rebel with a subpoena.

Davis, who bucked league authority time and again and won three Super Bowl titles during his half-century in professional football, died Saturday. He was 82.

The Hall of Famer died at his home in Oakland, the team said. The cause of death was not immediately disclosed.

Davis was one of the most important figures in pro football history from his role in the development of the AFL, the merger with the NFL and the success he built on the field with the Raiders.

Elected in 1992 to the Pro Football Hall of Fame, Davis was a trailblazer during his half-century in professional football. He hired the first black head coach of the modern era – Art Shell in 1988.

He hired the first Latino coach, Tom Flores; and the first woman CEO, Amy Trask. And he was infallibly loyal to his players and officials: to be a Raider was to be a Raider for life.